<!DOCTYPE html>
<html>
<meta charset="UTF-8">
<body>

<div style="display: flex;">
    <div style="padding: calc(50%);"></div>
    <div style="padding: 4px; flex: 0 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;"></div>
</div>

</body>
</html>
